--- bootstrap.inc	2010-03-25 03:04:30.000000000 -0700
+++ bootstrap.inc.new	2010-03-25 03:06:20.000000000 -0700
@@ -629,7 +629,7 @@ function drupal_load($type, $name) {
 function drupal_page_header() {
   header("Expires: Sun, 19 Nov 1978 05:00:00 GMT");
   header("Last-Modified: ". gmdate("D, d M Y H:i:s") ." GMT");
-  header("Cache-Control: store, no-cache, must-revalidate");
+  header("Cache-Control: store, private, must-revalidate");
   header("Cache-Control: post-check=0, pre-check=0", FALSE);
 }